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How to check if String is Palindrome using C#?
Let’s say we need to find that the following string is Palindrome or not −
str = "Level";
For that, convert the string into character array to chec each character −
char[] ch = str.ToCharArray();
Now find the reverse −
Array.Reverse(ch);
Use the Equals method to find whether the reverse is equal to original array or not −
bool res = str.Equals(rev, StringComparison.OrdinalIgnoreCase);
The following is the complete code −
Example
using System;
namespace Demo {
class Program {
static void Main(string[] args) {
string str, rev;
str = "Level";
char[] ch = str.ToCharArray();
Array.Reverse(ch);
rev = new string(ch);
bool res = str.Equals(rev, StringComparison.OrdinalIgnoreCase);
if (res == true) {
Console.WriteLine("String " + str + " is a Palindrome!");
} else {
Console.WriteLine("String " + str + " is not a Palindrome!");
}
Console.Read();
}
}
}Output
String Level is a Palindrome!
Updated on: 22-Jun-2020
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